1 files changed, 7 insertions, 3 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/crypto/agreement/ECDHBasicAgreement.java b/bcprov/src/main/java/org/bouncycastle/crypto/agreement/ECDHBasicAgreement.java
index 3ad3e1c..59944e0 100644
--- a/bcprov/src/main/java/org/bouncycastle/crypto/agreement/ECDHBasicAgreement.java
+++ b/bcprov/src/main/java/org/bouncycastle/crypto/agreement/ECDHBasicAgreement.java
@@ -2,12 +2,11 @@ package org.bouncycastle.crypto.agreement;
 
 import java.math.BigInteger;
 
-import org.bouncycastle.math.ec.ECPoint;
-
 import org.bouncycastle.crypto.BasicAgreement;
 import org.bouncycastle.crypto.CipherParameters;
-import org.bouncycastle.crypto.params.ECPublicKeyParameters;
 import org.bouncycastle.crypto.params.ECPrivateKeyParameters;
+import org.bouncycastle.crypto.params.ECPublicKeyParameters;
+import org.bouncycastle.math.ec.ECPoint;
 
 /**
  * P1363 7.2.1 ECSVDP-DH
@@ -34,6 +33,11 @@ public class ECDHBasicAgreement
         this.key = (ECPrivateKeyParameters)key;
     }
 
+    public int getFieldSize()
+    {
+        return (key.getParameters().getCurve().getFieldSize() + 7) / 8;
+    }
+
     public BigInteger calculateAgreement(
         CipherParameters pubKey)
     {